Zinc-82

Properties and data of the isotope ⁸²Zn.

Contents

General data

Name of the isotope:Zinc-82; Zn-82Symbol:⁸²Zn or 8230ZnMass number A:82 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:52Isotopic mass:81.954574(3) u (atomic weight of Zinc-82)Nuclide mass:81.9381171 u (calculated nuclear mass without electrons)Mass excess:-42.31405 MeVMass defect:0.730752592 u (per nucleus)Nuclear binding energy:680.69165493 MeV (per nucleus)
8.30111774 MeV (average binding energy per nucleon)Separation energy:S_N = 4.186(6) MeV (first neutron)
S_P = 18.18(50) MeV (first proton)Half-life:166(11) msDecay constant λ:4.1755854250599 s^-1Specific activity α:3.104439950914 × 10⁺²² Bq g^-1
839037824571.57 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1997

Radioactive Decay

Half-life T_½ = 166(11) ms respectively 1.66 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸²Ga	31 %	10.617(4) MeV
β^-, n	⁸¹Ga	69(7) %	7.243(4) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 52) and isobaric (same nucleon number A = 82) with Zinc-82. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 52	Isobar A = 82
28	⁸⁰Ni
29	⁸¹Cu	⁸²Cu
30	⁸²Zn	⁸²Zn
31	⁸³Ga	⁸²Ga
32	⁸⁴Ge	⁸²Ge
33	⁸⁵As	⁸²As
34	⁸⁶Se	⁸²Se
35	⁸⁷Br	⁸²Br
36	⁸⁸Kr	⁸²Kr
37	⁸⁹Rb	⁸²Rb
38	⁹⁰Sr	⁸²Sr
39	⁹¹Y	⁸²Y
40	⁹²Zr	⁸²Zr
41	⁹³Nb	⁸²Nb
42	⁹⁴Mo	⁸²Mo
43	⁹⁵Tc
44	⁹⁶Ru
45	⁹⁷Rh
46	⁹⁸Pd
47	⁹⁹Ag
48	¹⁰⁰Cd
49	¹⁰¹In
50	¹⁰²Sn
51	¹⁰³Sb